A Simplified model for postflashover burning of thermoplastic materials

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Proceedings titleASME Heat Transfer Division
ConferenceASME Winter Annual Meeting, Heat Transfer in Combustion Systems: 10 December 1989, San Francisco, CA, USA
Pages4551; # of pages: 7
Subjectthermoplastic resin; fire performance; Fire; thermoplastique; réaction au feu
AbstractThe equations governing the fire dynamics of a postflashover fire involving thermoplastic materials are analyzed through similarity considerations. For simplicity and for conservative modeling of the fire bahaviour, the heat loss through the compartment walls is neglected. The fire behaviour is shown to be governed by two algebraic equations. The dependent variables chosen are the dimensionless gas temperature and the dimensionless burning rate. They are shown to depend on only six similarity parameters and three coefficients. Two of the coefficients, the combustion efficiency and the evaporation efficiency, are not determined in the present analysis but are assumed to be at their maximum values for conservative fire resistance and fire spread design considerations. Numerical solutions are mapped out. Assuming reasonable values for the two efficiencies, the model is shown to predict gas temperature and burning rate that compare favourably with available experimental data.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number32347
NPARC number20375512
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Record identifier55a108ff-6fa3-4577-bf37-9b0dde00997a
Record created2012-07-23
Record modified2016-05-09
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